Would you expect the salt [HPMe3][HBMe3] to be able to convert an imine into an amine? Why or why not?

The combinations of the simple Lewis acid and the Lewis base when react with the hydrogen results the neutralization. The imines are formed when the primary amine reacts by the ketone and below the various conditions. The formation of Imine needs the catalyst acid where the reaction is very slow. An acid is required for an elimination of the water. Amine is organic compound along with the functional groups which contains the basic atoms of the nitrogen by the lone pair. The amines are the derivative of the ammonia where the more atoms of hydrogen also replaced through the substituents like the aryl group and the alkyl group.

a)      Would you expect the combination of PMe₃ and BMe₃ to react with H₂ gas? Why or why not?

PMe₃ and BMe₃   react with the hydrogen gas because the covalent hydrides which are formed PMe₃ and BMe_{3 and} when the hydrogen reacts by the p-blocks of the non-metals through the electrons sharing. Then the relatively of hydrogen reaction by the various elements. Then the hydrogen could readily react by the oxygen, halogens and the nitride due to the very electronegative and thus it’s very reactive.

2. Rank the following carbocations in order of increasing stability (1 = least stable, 5 = most stable). Justify your ranking.

Answer:

Stability can be compared by looking at the number of  higher will be stability;

The structures of all the carbonations are given as below: - Here, we have 3 degree carbonation is known as the tertiary carbonation 2 degree carbonation is known as the secondary carbonation and 1 degree carbonation is primary

3. The carbocation shown below has too much steric bulk near the central carbon to allow for Lewis bases to react at that site. It does however react with Lewis bases to form a new compound. Predict the product of the reaction shown below and explain why a Lewis base reacts at the site you predict.

According to Lewis theory; the acid is the electron pair acceptor as well as the base is the electron pair donor. The Lewis bases are the substances which can also donate the pair of electron to form the new bond. It is also sometimes referred like the nucleophile and the seeker of the positive nucleus the neutralization is a sharing for the electron pair among an bases and acid.

4. Rank the following compounds in order of increasing P-Cl bond strength (1 = weakest, 5 = strongest).  Justify your ranking.

The electronegativity difference among the atoms given the compounds;

Answer :

5. Breaking a “cold pack”, for example to treat a sports injury, induces a chemical reaction in which the reaction medium becomes colder.

a) What must be true about the relative bond strengths of the reactants and products side in such a chemical reaction?

The exothermic reaction which gives the results of the product by the more stable bonds along with the lower energy , and the endothermic reaction which would also give the result in the products of the higher energy which is less stable. In the chemical reactions the reactant is the compound and element and the products, is element or compounds. It is not change one element into the various chemical reactions.

b) What factor allows for the reaction to be spontaneous in this case?

The spontaneous reactions also release the free energy which they proceed and also evaluating the factor for the spontaneity of reactions which are entropy as well as enthalpy and there changes occur in the system.

There are two factors which evaluate the process the spontaneous;

·         Enthalpy reaction

·         Entropy reaction